premedial Ordovician

用法例句

Characteristics of Middle Ordovician Organic Reefs in Bachu Area;

巴楚地区中奥陶世生物礁造礁生物特征

By means of core observation and log analysis of reservoir,it is recognized that widely distributed Tazhong uplift is formed from the late of Middle Ordovician to the early of Late Ordovician(from Llandeilo to Early Caradoc).

通过岩心观察、测井储集层分析等手段,识别出塔中凸起区广泛分布形成于中奥陶世晚期-晚奥陶世早期(兰代洛世-卡拉道克世早期)、发育于下奥陶统鹰山组中上部碳酸盐岩中且被上奥陶统良里塔格组覆盖的古潜山岩溶储集层,其原岩主要为开阔-半局限台地相颗粒灰岩、泥晶灰岩、藻灰岩夹白云岩。

The middle Ordovician volcanic rocks of the Daliugou Group in the Hami-Wupu area of the Eastern Tianshan seem to be the oldest strata of the studied area.

新疆东天山哈密五堡地区中奥陶世大柳沟组是研究区出露的最老的火山岩地层,大地构造属于准噶尔板块-大南湖复合岛弧火山岩带。

The common traits of the ores, ore body conformation and ore-bearing rock series of Middle Ordovician Epoch in central Hunan were briefly introduced; the traits of organic geochemistry, RE, stable isotopes, microelements and macro-elements of the kind of Mn-ores were summarized emphatically.

简要介绍了湘中地区中奥陶世锰矿含矿岩系、矿体形态、矿石等一般特征，重点总结了该类型锰矿的常量元素、微量元素、稳定同位素及稀土元素、有机地球化学特征。

In recent years,it discovered in the regional survey of the scale of 1∶50000 that the early to middle Ordovician absent in the southern Baoshan of western Yunnan.

近年的1∶5万区调工作发现,在滇西保山南部地区缺失早中奥陶世沉积,这是一个值得探索的重大地质问题,因为过去认为施甸地层小区的寒武-奥陶纪为连续沉积。

LATE EARLY AND MIDDLE ORDOVICIAN CEPHALOPODS FROM GUICHI, ANHUI

安徽贵池早奥陶世晚期及中奥陶世的头足类

Geochemical study of the Early and Middle Ordovician black graptolit bearing rock series in the southern Anhui-northern jiangxi area

皖南赣北地区早、中奥陶世含笔石黑色岩系地层地球化学的研究

The Discovery and Significance of Absence in Early-Middle Ordovician in Southern Baoshan,Western Yunnan

滇西保山南部早中奥陶世沉积缺失的发现及意义

This paper is a continuation of the papers on lithofacies palaeogeography of the Early, Middle and Late Cambrian and the Early and Middle Ordovician.

本文是笔者等的中国早、中、晚寒武世和早、中奥陶世岩相古地理诸文的继续。

The material source of the Carboniferous karst type bauxite in North China mainly came from the underlying Late Cambrian-Middle Ordovician carbonate rock.

华北石炭纪岩溶型铝土矿的主要物质来源为下伏的晚寒武世—中奥陶世碳酸盐岩。

CYANOBACTERIAL COMMUNITY FROM THE REEF MOUND OF THE LIANGLITAG FORMATION(UPPER ORDOVICIAN),BACHU,XINJIANG,NW CHINA

新疆巴楚晚奥陶世礁丘中的蓝菌群落

Late Ordovician palaeogeomorphology and its sedimentary facies characteristics in central Tarim uplift

塔中隆起晚奥陶世古地貌及其沉积相特征

CONODONT BIOSTRATIGRAPHY AND SEDIMENTOLOGY OF THE MIDDLE AND UPPER ORDOVICIAN IN BACHU, XINJIANG

新疆巴楚中—晚奥陶世牙形刺生物地层和沉积环境研究

This was the result from the large-scale regression in the Late Ordovician.

这是晚奥陶世晚期大规模海退的结果。

Comprehensive researches have concluded that the Heishan ophiolite was formed in Nanhua Ordovician period and its structural location in Silurian period early Middle Devonian epoch.

综合研究得出黑山蛇绿岩形成于南华—奥陶纪,构造就位于志留纪—早中泥盆世。

Marine volcanics of Early Ordovician was found in Zhifang region.

纸房地区具有早奥陶世海相火山岩存在。

GRAPTOLITE ZONE OF THE ORDOVICIAN AND EARLY SILURIAN IN KALPIN REGION, XINJIANG

新疆柯坪地区奥陶纪和早志留世的化石带

CONTACTINC RELATIONSHIP BETWEEN THE UPPER一AND MIDDLE ORDOVICIAN SEQUENCES TO THE SOUTH OF XINGDI FAULT IN KULUKTAK AREA,XINJIANG

库鲁克塔格地区兴地断裂以南中奥陶统与上奥陶统的接触关系

AN ANALYSIS ON MIDDLE ORDOVICIAN STRATIGRAPHIC SEQUENCES IN GUANGFENG

江西广丰地区中奥陶统层序地层分析

Study on Factures Base on Carbonate Reservoirs in Ordovician in Tazhong-45 Area, Tarim Basin

塔中45井区奥陶系碳酸盐岩裂缝研究

UPPER ORDOVICIAN CONODONTS FROM THE CENTRAL HIGH,TARIM BLOCK,NW CHINA

塔里木中央隆起区上奥陶统的牙形刺

The Sea-level Changes during the Latest Ordovician to the Earliest Silurian in the Yangtze Basin and the Subdivision of the Ordovician-Silurian Boundary;

扬子海盆晚奥陶世晚期至志留纪初期海平面升降与奥陶/志留系界线的划分与对比

Lower Ordovician Reefs in the Honghuayuan Formation at Dongzhi,Anhui:Microbial Reefs Just Prior to the Ordovician Biodiversification

安徽东至早奥陶世红花园组生物礁:奥陶纪生物大辐射前的微生物礁